DAVID M. MARTIN, MD / SCIENCE PHOTO LIBRARY DAVID M. MARTIN, MD / SCIENCE PHOTO LIBRARY
Large intestine. Endoscope view of the colon, the major part of the large intestine. The triangular form of the colon is due to the muscles of its walls, which contract to force digested food along its length. The primary function of the colon is to absorb water from digested food.
Model release not required. Property release not required.